APA (7th ed.) Citation

Christopher, P. J. (2007). Greatest cities in the world you should visit. Indiana Publishing House.

Chicago Style (17th ed.) Citation

Christopher, Paul J. Greatest Cities in the World You Should Visit. New Delhi: Indiana Publishing House, 2007.

MLA (9th ed.) Citation

Christopher, Paul J. Greatest Cities in the World You Should Visit. Indiana Publishing House, 2007.